203420223 has 12 divisors (see below), whose sum is σ = 294112728. Its totient is φ = 135482640.

The previous prime is 203420209. The next prime is 203420237. The reversal of 203420223 is 322024302.

203420223 is a `hidden beast` number, since 20 + 3 + 420 + 223 = 666.

It is an interprime number because it is at equal distance from previous prime (203420209) and next prime (203420237).

It is not a de Polignac number, because 203420223 - 2⁴ = 203420207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203420196 and 203420205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203420423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 540 + ... + 20177.

It is an arithmetic number, because the mean of its divisors is an integer number (24509394).

Almost surely, 2^203420223 is an apocalyptic number.

203420223 is a deficient number, since it is larger than the sum of its proper divisors (90692505).

203420223 is a wasteful number, since it uses less digits than its factorization.

203420223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21814 (or 21811 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 203420223 is about 14262.5461611873. The cubic root of 203420223 is about 588.1183209760.

Adding to 203420223 its reverse (322024302), we get a palindrome (525444525).

It can be divided in two parts, 20 and 3420223, that added together give a palindrome (3420243).

The spelling of 203420223 in words is "two hundred three million, four hundred twenty thousand, two hundred twenty-three".